Hello Everyone,

I'm new to this forum, and I'm looking for some input. I'm trying to "dial" in a limewash recipe. The problem that has arisen is chalking. Not, as in completely coming off the wall, but very subtle. I'm trying to keep the recipe simple and economical as possible.
So I've allowed 5 lbs. hydrated type "S" lime stand in 1gal. h2o for a day. Then mixed hydrated type "S" lime powder with 1.5 lbs. dissolved salt & 2 qts. h2o. Been actuallly overall pleased with results.
However, the chalking is a concern. As I'm an interior natural clay plasterer, and want to keep chalking to a minimal. The product I use, is compatiable with limewashing. Only thing I've heard is possibly adding potash alum to mix. Any other suggestions would greatly be appreciated. Thanks everybody. Ck

hey man may be off here but alwalys thought just water, lime and natural pigment....dont know about other stuff. also when I do mantovano, on last coat there is chalking, I just lightly rubb/buff it with my hand and it goes away...maybe try same thing

what are you putting it on?

I'm applying it over American Clay Natural Earth Plaster. Ck

did you put a sealer on it or not?

No, once sealed the clay with not "accept" limewash or caesin paints. So I'm working with unsealed sample boards. Ck

The reason I asked is if you go over a sealed surface or even flat paint it will always be chalky. I have never used AC but I did not think it would do that. The only choice would be to wax on interior only.
Doyle

What do you mean by "wax on interior only"? Ck

Don't think I would put a wax outside.

ive had a problem with lime wash chalking too. You can eliminate this frustation by simply adding a small amount of concrete bonder to your limewash, about 1 to 3 ounces per gallon. stir it up reeally good. It worked for me.